Battery depassivation and conditioning method and apparatus

Details Battery depassivation and conditioning method and apparatus Battery depassivation and conditioning method and apparatus

1999-01-27

2000-09-12

Wong, Peter S.

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

H02J 700

Patent

active

061182516

ABSTRACT:
The present invention provides a unique method for safely and effectively moving the passive layer from the anode of a battery, so that the battery will function safely and properly. Batteries that are stored for long periods of time develop passive layers over their anodes. The present invention removes this passive layer by applying a series of controlled electric pulses to the anode. When a controlled electric charge discharges at the anode, it removes a portion of the passive layer at the discharge region of the anode. Each pulse is separated from a subsequent pulse by a resting time period. This resting period allows the anode to recover, so that the subsequent pulse will discharge at another location. These pulses are applied to the anode until the entire passive layer is safely removed, thus allowing the battery to function properly.

REFERENCES:
patent: 4730153 (1988-03-01), Breting et al.
patent: 4795537 (1989-01-01), Timewell
patent: 4839248 (1989-06-01), Magnussen, Jr. et al.
patent: 4885523 (1989-12-01), Koenck
patent: 5182509 (1993-01-01), Simmonds
patent: 5196779 (1993-03-01), Alexandres et al.
patent: 5677612 (1997-10-01), Campagnuolo et al.
patent: 5905363 (1999-05-01), Helbing et al.

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